Alright, let's work through 2809 times 1107 step by step
2809 × 1107 = 1107 × (2809)
+ 1107 × 9 that equals 9963
+ 1107 × 00 yielding 0
+ 1107 × 800 which equals 885600
+ 1107 × 2000 which equals 2214000

= 3109563
